A good tutorial for where light and shadow come into play for see through objects. Light can be broken up into the the different spectrums giving shape to things like this bubble. The fill of different rainbow colors helps us to see the bubble.
I have this new infatuation with soap bubbles. Is that strange? I think i would blow bubbles all day from this bottles of bubble liquid if i could afford one (oh my adorable little teenage fund) (*´∇｀*) - House Decorators Collection